Automatic feeding device for tack-machines.



T. H. WYNN.

AUTOMATIC FEEDING DEVICE FOR TACK MACHINES.

APPLICATION FILED MAR.17, 1914.

Patented July 7, 1914.

4 SHEETS-SHBBT 1.

Inwnh m I 7T/1.WYNN

I/if T. H. WYNN. AUTOMATIC FEEDING DEVICE FOR TACKIMAOHINES. APPLICATIONFILED MAR. 17, 1914.

Patented July 7, 1914.

4 SHEETS-SHEET 2.

ghwssas. i I I Inventor: ruwv /v/v T. H. WYNN.

AUTOMATIC FEEDING DEVICE FOR TACK MACHINES.

APPLICATION FILED MAR. 17, 1914.

1,102,625, A Patented July 7, 1914.

4 SHEETS-SHEET 3.

Wihuzsscs. Immnitor: A

T. H. WYNN;

AUTOMATIC FEEDING DEVICE FOR TAQK MACHINES. APPLICATION FILED MAR.17,1914.

Patented July 7, 1914.

4 SHEETS-SHEET 4.

WW. Imam UNITED STATES PATENT OFFTQE.

THOMAS TO JOHN INGLISMCLABEN, OF HAMILTON, ONTARIO, CANADA.

. I AUTOMATIC FEEDING DEVICE FOR TACK-MACHINES.

Specification of Letters Patent.

Application filed March 17, 1914. Serial No. 825,283.

To all whom it may concern:

Be it known that I, THOMAS HENRY WYNN of the city of Hamilton, inthe-county of",

. in which the material for manufacturing the tacks will be fed into themachine from a coil.

A further object is to provide means for gripping the material fed intothe machine A still furtherobject is to devise means for simultaneouslygripping the material to be fed and feeding it by means of the grip pingmechanism.

I Another object is to provide means for adjusting the feeding device sothatthe points of the tacks may be variedto suit different requirements,and another object is to provide a nose piece which will be turned underthe gripping device instead of over as has hitherto been the-case.

My invention consists of the parts constructed and arranged ashereinafter more particularly described and illustrated in theaccompanying drawings in which- Figure 1 represents. a side elevation ofa tack machine showing the boss head and my device applied thereto. Fig.2 is an enlarged front view thereof. Fig. 3 is aplan view of my feedingdevice applied to a tack machine. Fig. 5'4 is a perspective detail theref. Fig. 5 is an enlarged elevational detail of the gripping jaws. Fig.(5 is a crosssectional view of the rocking aw and Fig. 7 is a crosssectional view showing a mechanism provided on the forward end of thefeeding tube of the machine for preventing the strip .or ribbon ofmaterial from slipping or being drawn back in a direction opposite tothe direction in which it is fed.

Like characters of reference indicate corresponding parts in thedifferent views.

l is the main shaft of the tack machine. 2 is the fly wheel thereof.

3 and 4 are bearing brackets for the main shaft suitably secured orformed on the bed 5 of the machine.

' Patented July 7, 1914.

6 is a pinion on the main shaft and 7v is a gear meshing therewith andsuitably journaled to the frame of the machine.

8 is the boss head. 9 is a pitman connected thereto at top and adaptedto actuate the tack machine.

The parts as described above are standard on the ordinary tack machinesat present in use. -I will now describe my feeding device designed to beapplied thereto.

10 is a bracket secured to the bearing bracket 3, and His a bracketsuitably'secured to the bed 5 of the tack machine.

12 is a cross shaft extending between the two brackets.

13 and 11 are set screws threaded through the brackets 10 and 11respectively and pro- HENRY WYNN, OF HAMILTON, ONTARIO, CANADA, ASSIGNOROF ONE-HALF Y idly connected to the shaft 12, but said arm being capableof being adjusted thereon.

19 is a jaw adjustably secured to the arm 18 by the set screw 20.

21 is an arm secured to the shaft 12 in such a manner as to be capableof being rocked about an axis at right angles to the longitudinal axisof the shaft. For this purpose set screws 22 are threaded through thearm, said arm having a cross aperture 23 therein through which the shaft1% extends. The inner ends of the set screws are pointed and engage theshaft, thus permitting the same to be rocked as above described.

2%, 24 are look nuts on the set screws 22.

25 is an upwardly extending portion of the arm 21.

' 26 is a suitably disposed cam on the boss head 8, said cam beingadjustable thereon.

27 is a bracket secured to the bearing bracket 4 and having the lever 28pivotally connected thereto.

29 isa roller on the inner end of the lever adapted to engage the cam 26when the boss head is revolved. 30 is a spring cmincctcd to the otherend of the lever 28 at one end and-to the bed of the machine at theother. 31 is a set screw threaded in the latter end of the lever 28 andextending upwardly therefrom.

32 is a rod secured at one end to the extension 25 of the arm 21, theother end being provided with a set screw 33 adapted to engage theaforesaid set screw 31 on the lever 28.

34 is a collar adapted to be rigidly secured to the cross shaft 12 butbeing adjustable thereon."

35 is an upwardly extending arm secured to the collar 34. 36 is a secondcam on the main shaft 1.

.37 is a lever journaled at its lower end to the bearing bracket 4 ofthe machine, the

upper end being adapted to engage the cam :36 upon the-shaft beingrevolved.

movement. This is achieved by the end of the rod 38 extending into thehead 39 and ,being held therein by the two set screws 40 constructed ina similar vmanner as already described for-"the rocking arm 21.

v 41 is a spring connected at one end' to the head 39 of the arm 3-5,the lower end bearingagainst the cross rod 32.

. 42 is a tube through which the material forming the tack blanks isdesigned. to be fed, saidtube being so mounted as to be capable of beingrotated a-half turn in each direction. i a

43 and 44 are levers connected to a cross shaft 45 provided .with theextension 46.

47 is the coil of material to be fed into the tack machine and 48 areguiding rollers for guiding the same into the tube.

49 is a strap connected at one end to the tube and at the other end tothe lever 44.

. ment with the strip by the spring 60.

v50 is a strap connected at one end to the lever 43 and at the other endto the tube 42. 51 is a link pivotally connected at one end to the gear7 and connected at the other end to the bell crank 52.

53' is a rod detachably connecting the upper end of the bell crank tothe extension p 46 onthe shaft 45. Y

58 is a dog rigidly connectedto the for-- ward end of the sleeve. 7

59 is a dog pivotally connectedabove the aforesaid dog 58 and. sodesigned as to always engage the strip of material being .fed through.The dog 59 is held in engage:

61, 61 are-screws extending t ough the tube and threaded into the sleeve54 for holding the sleeve, in place in the tube.

62 is a hook connected to the. head 39 of the arm35.

ea attached to the nameofthe tack machine, and 64 is a spring extending65 between the two hooks 62 and63.

The operation of the device is as atollows When the tack machine is inoperation for-cutting the tack blanks and forming the heads thereon themain shaft 1 is rotated in the direction indicated'by the arrow inFig. 1. As this takes place the boss head 8 is revolved, thus bringingthe cam 26 into engagement with the roller 29 of the lever 28,consequently depressing the roller end of the lever and raising theother end therei of. As the otherend is provided with a set screw3lengaging the set screw 33 on the cross. rod 32 the free end. of this rod32 is moved upwardly, and as therod ,is

rigidly connected with the upwardly extending port-ion 25 of the arm 21the arm is swung about the set screws 22, thus bringing the jaw 2'1closer to the jaw l9'and consequently gripping the strip of materialfirmly on the side edges thereof. As this takes place the cam 36 comesinto engagement with the lever 37 thus forcing -back the upper end ofthe arm 35 and as the arm 35 is rigidly connected to the shaft 12 by thecollar 34 the shaft will be turned in the direction indicated'by thearrow in Fig. 4;

the tack machine, thus feeding the strip of material 57 into the same.When the shaft 1 rotates a further'extent the cams 26 and 36 slide oh"the levers 28 and 37 respectively, and the springs 30 and 64 restore thelevers respectively into the initial orinoperative ing operation thetube 42 is turned ahalf I consequently the jaws will be moved towardturn, thus reversing the taper of then shea red end of the strip ofmaterial 57 in order 'to' properly position thesame for cutting off thenext blank. This operation is achieved by the'bell crank 52 beingconnected with the rod 53 and such rod 53 being connected withthe'extension 46 of the shaft 45 which" rocks the levers 43 and 44'backand firth,

thus alternately pulling on the straps 49 and 50 which alternately turnthe tube in one direction and then in the other. In order to throw thetube turning mechanism out of engagement it is merely necessary to throwthe rod 53 out of engagement with the,

extension 46 of the shaft. 'lNhen" this is done the tube will not berotatedbut the mechanism for feeding and gripping would go on just thesame. In order to obviate this difiiculty the operator when leaving amachine running merely has to turn the tube into the machine.

The arms 18 and 21 are adjustable on the shaft '12, also the jaws-areadjustable on the arms in order that should it be desired to turn thetube 42 at an inclination to the normal longitudinal axis thereof for soposi tioning the material as to cut a tack blank with a broader ornarrower point, the jaws can be set so that they are parallel with thestrip of material being fed. The set screws 33 and 31 can also beadjusted for changing the throw of the jaw 21 The lever 37 has also anextension 37* which is provided on its free end with a set screw 37threaded therethrough and adapted to bear against the bearing bracket 4.This screw can be;

,--material a greater or smaller extent. Forther the cams 26 and 86 areadj ustably 6011*. nected to the'shaft 1 in order that they can beadjusted to change the timing of the feeding and gripping device.

Hitherto it has been the custom in the ordinary tack machines at presentin useto feed shortstrips of material through the feeding tube. Whenthis is done there is a loss of material of approximately one inch foreach strip so fed. Further the machine has to be under constantobservation. But in my automatic feeding device the strip of material isfed into the machine from acoi'l and consequently the action isautomatic and very little attention is required; When it is required toget at the different parts of the" tack machine the feeding device canbe readily disconnected therefrom with the minimum of trouble. Furtherthe nose piece (35 is connected to the tube 42 in the ordinary mannerand the strip of material 57 extends through the foot thereof. But inthe'present instance instead of turning the nose piece over in an upwarddirection it is turned'down under the gripping and'feede ing jaws. Thebed pocket is at present provided with double guards, one stationary andthe other a spring guard. Now'I do away with the spring guard entirelyand instead use the stationary guard alone.

This guardis adjustable as in the stationary guard at present in use. v

. Itis to be understood that it would be within the scope of myinvention to use my feedon a cut nail machine. What I claim asmyinvention and desire to secure by Letters Patent is i. Inan automaticfeeding device for 'tack machines adapted to cut the material feedingthe tion with means for turning the strip of material overin theopposite direction after the shearing of each tack blank from the same,of means for gripping the strip of material on:the narrow faces or sideedges of the strip and reciprocating means for strip so gripped into themachine.

2. Inan automatic feeding device for tack machines adapted to cut thematerial for the tack blanks transversely the combination with means forturning the strip. of material over in the opposite direction after theshearing of each tack blank from. the same, of a pair of jaws grippingthe narrow faces or edges of the strip of material, and reciprocatingmeans for actuating the jaws and feeding the material into the ma.chine. j a

In ,an automatic feeding device 7 for tack machines adapted to cut thematerial for the tack blanks transversely, the'combination with meansfor turning the'strip of material over in the opposite direction afterthe shearing of each tack blank from the same, of a pair of jaws, saidstrip of material adapted to be gripped bet-ween the the tack blankstransversely, the combina-' tion with'a guiding tube adapted to turn inthe opposite direction after the shearing of each tack blank from thestrip, of means for gripping the strip of material on the .narrow facesor edges thereof, said means situated between the'shearing mechanism ofthe tack machine and the guiding tube andindependent ofthe latter, andreciprocating means for feeding the-strip so gripped into the machine.

{ 5. In an automatic feeding device for tack machines adapted to cut thematerial for .the tack blanks transversely, the combination with aguiding tube through which the material is fed, said guiding tubeadapted to turn in the opposite direction after the shearing of eachtack blank from the strip,

of means for gripping the strip of material on thenarrow faces or edgesthereof, said means situated between the shearing mechanism of the tackmachine and the guiding tube and independent of the latter,reciproeating means for feeding the strip so gripped into the machine,and means connected ,to the strip for preventing retrograde'r'novementthereof.

' v6. In an automaticjfeeding device for tack machines adapted to cutthe material for the tack'blanks transversely, the combinetion-with aguiding tube through- ,which the 7 shearing of each tack blank from thestrip,

material is fed, said guiding tube adapted to turn in the-oppositedirection after the the tube, a dog rigidly mounted on the outer end ofthe sleeve, and a spring held dog pivotally mounted on the outer end ofthe sleeve.

7. In an automatic feeding device for tack machines, the combinationwith the main shaft of the machine, of gripping and feeding jaws, saidjaws adapted to grip the side faces or edgesof .the strip to be fed,means upon rotation of, the shaft for throwing one of the jaws towardthe other jaw, and means forsimultaneously moving the jaws toward themachine. I V 8. In an automatic feeding device for tack machines, thecombination with the main shaft, main frame and boss head connected tothe main shaft, of a cross shaft rotatably mounted on theframe, grippingand feed? ing jaws, one of the gripping and feeding jaws rigidlyconnected to the cross shaft, the other of the feeding jaws capable ofrocking on the cross shaft about an aXis at right angles to thelongitudinal axis of the shaft, means controlledby the rotation of themain shaft for throwing the rocking jaw toward the fixed jaw, and meanscontrolled by the operation of the main shaft for turning the crossshaft and moving the jaws simultaneously toward the machine.

9. In an automatic feeding device for tack machines, the combinationwith the main shaft, main frame and boss head connected to the mainshaft of a cross shaft rotatably mounted on the frame, gripping andfeeding jaws, one of the gripping and feeding jaws rigidly connected tothe cross shaft, the other of the feedin jaws capable of rocking on thecross sha t about an axis at right angles to the longitudinal axis ofthe shaft, a cam on the main shaft, means engaging the' cam for throwingthe rocking shaft into the engaged position, and means controlled by theoperation of the main shaft for turning the cross shaft and moving thejaws simultaneously toward the machine.

10.] In an automatic feeding device for tack machines, the combinationwith the main shaft, main frame and boss head connected to the mainshaft, of a cross shaft rotatably mounted on the frame, gripping andfeeding jaws, one of the gripping and feeding jaws rigidly connected tothe cross shaft, the other of the feeding 'aws capable of rocking on thecross shaft a out'an axis at right angles to the longitudinal axis ofthe shaft, a cam on the main shaft, means engaging the cam for throwingthe rocking shaft into the engaged position, a second cam on themam'shaft, and means engagmg the second cam on the main shaft forturning the cross shaft and moving the simultaneously toward themachine. 1

11. In an automatic feeding device for tack machines, the combinationwith the main shaft, main frame and boss head connected to the mainshaft, of a cross shaft rotatably mounted on the frame, gripping andfeeding jaws, one of the gripping and feeding jaws rigidly connected tothe cross shaft, the other of the jaws capable of rocking on the crossshaft about an axis at right angles to the longitudinal axis of theshaft, a cam on the main shaft, a lever fulcrumed on the frame of themachine, one end of the lever engaging the cam upon rotation of theshaft, and means connecting the other end of the lever to the rockingjaw for moving the latter into the engaged position.

12.- In an automatic feeding device for tack machines, the combinationwith the main shaft, main frame and boss head connected to the mainshaft, of across shaft rotatably mounted on the frame, gripping andfeeding jaws, one of the gripping and feeding jaws rigidly connected tothe cross shaft, the other of the jaws capable of rocking on the crossshaft about an axis at right angles to the longitudinal axis of theshaft, a cam on the main shaft, a lever fulcrumed on the frame of themachine, one endofthe lever engaging the camupon rotation of the shaft,and adjustable means connecting the other end of the lever to therocking jaw for moving the latter into the engaged .free end engagingthe second cam upon rotation of the shaft, and means connecting thelever to the cross shaft for rotating the same and simultaneously movingthe jaws toward the machine.

14. In an automatic feeding device for tack machines, the combinationwith the main shaft. main frame and boss head connected to the mainshaft, of a cross shaft rotatably mounted on the frame, gripping andfeeding jaws, one of the ripping and feeding jaws rigidly connected tothe cross shaft, the other'of the jaws capable of rocking on the crossshaft about an axis at right angles to the longitudinal axis of theshaft, in second cam on the main shaft, a lever fulcrumed to the frameof the machine, the

7 against the lever.

15. In an automatic feeding device yfor tack machines, the combinationwith a material guiding tube rotatably supported on the frame of themachine, of a pair of jaws gripping the narrow faces or edges of thestrip of material to be fed, said jaws situated between the guiding tubeand the machine, a nose piece suitably secured to the guiding tube, thematerial to be fed extending through the nose piece, and means forcompelling the nose piece to turn back and forth under the jaws upon thepartial r0ta tion of the guiding tube.

In testimony whereof, I have signed at the city of Hamilton, in thecounty of \Ventworth, in the Province of Ontario, Canada, this 13th dayof March, 1914.

THOMAS HENRY WYNN.

Witnesses:

J. E. M. FETHERSTONHAUGH, v Enw. NEAME.

Copies of this patent may be obtained tor five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

